One term for everyone... Motion-blur. It's way heavily used in games anymore, not just for effect, but to keep people from noticing that they can't keep a steady FPS. I'm not claiming to know, but I wouldn't be surprised if the people who don't notice a difference between 60 and 30 more often play with motion blur on. Again, not saying I believe this to be true, just wouldn't be surprised.
And frankly, smoothness has a lot more to do with how frames are presented, the animations being used [temporal aliasing], and how evenly the frames are processed. GC routines can seriously frak your smoothness, from random frametime spikes, while still averaging a set FPS.
If you're used to 60+ or even 120+, it's extremely jarring to see a cinematic in which you literally watch things jump from parts of the screen to the next, even if it's only a little. But slap a little motion blur on, shader blur and bloom the hell out of scenes and it's much more tolerable for some.
Not me, but I totally get why people say they don't notice differences if it's not something they generally tinker with for hours [i do] to get "perfect" settings.
And frankly, smoothness has a lot more to do with how frames are presented, the animations being used [temporal aliasing], and how evenly the frames are processed. GC routines can seriously frak your smoothness, from random frametime spikes, while still averaging a set FPS.
If you're used to 60+ or even 120+, it's extremely jarring to see a cinematic in which you literally watch things jump from parts of the screen to the next, even if it's only a little. But slap a little motion blur on, shader blur and bloom the hell out of scenes and it's much more tolerable for some.
Not me, but I totally get why people say they don't notice differences if it's not something they generally tinker with for hours [i do] to get "perfect" settings.